MESON Chess Problem Database

Problem Display
PID: 189613 (8/5p2/8/2NP2p1/3k4/2Rr2P1/BP4bb/KN2Q3 w - - 0 1)

Gross, Izidor

Magyar Sakkujsag, 1911

8/5p2/8/2NP2p1/3k4/2Rr2P1/BP4bb/KN2Q3

#2

9 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Qe3#
    • 1...Rd2
      • 2.Qe3#
    • 1...Rxc3
      • 2.Qxc3#
    • 1...Re3
      • 2.Qxe3#
    • 1...Rf3
      • 2.Qe4#
    • 1...Bf1
      • 2.Qe4#
    • 1...Bh3
      • 2.Qe4#
    • 1...Be4
      • 2.Qxe4#
    • 1...f5
      • 2.Se6#
    • 1...f6
      • 2.Se6#
  • Tries
    • 1.Sa3?
      • threat
        • 2.Sc2#
        • 2.Sb5#
      • 1...Rxc3
        • 2.Qxc3#
      • 1...Re3
        • 2.Qxe3#
      • 1...Be4
        • 2.Qxe4#
      • 1...Rd2
        • 2.Sb5#
        • 2.Qe3#
      • 1...Rd1+!
    • 1.Qf2+?
      • 1...Re3
        • 2.Qxe3#
      • 1...Ke5!
    • 1.b4?
      • threat
        • 2.Rxd3#
      • 1...Rxc3
        • 2.Qxc3#
      • 1...Re3
        • 2.Qxe3#
      • 1...Be4
        • 2.Qxe4#
      • 1...Rd1
        • 2.Qe3#
      • 1...Rd2
        • 2.Qe3#
      • 1...Rf3
        • 2.Qe4#
      • 1...Bf1
        • 2.Qe4#
      • 1...Rxg3!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Rxd3#
      • 1...Rxc3
        • 2.bxc3#
      • 1...Rxg3
        • 2.Qf6#
      • 1...Be4
        • 2.Qxe4#
      • 1...Rd1
        • 2.Qf6#
        • 2.Qe3#
      • 1...Rd2
        • 2.Qf6#
        • 2.Qe3#
      • 1...Re3
        • 2.Qxe3#
      • 1...Rf3
        • 2.Qe4#
      • 1...Bf1
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD,P_PINS(B)::QAB1(C)
    • R(c);N_GUARD::QAB1(C)
    • R(c);OGATE,XR(F)::QAB1(C),XR(c)
    • R(c);N_GUARD::QAB1(C),XR(c)
    • R(c);S_CUTB(a)::QAR1(C)
    • B(a);N_GUARD::QAR1(C)
    • B(a);N_GUARD::QAR1(C),XB(a)
    • P(f);N_GUARD::S(H)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);OGATE,XR(F)::QAB1(C),XR(c)
        • R(c);N_GUARD::QAB1(C),XR(c)
        • B(a);N_GUARD::QAR1(C),XB(a)
      • Refutation
        • R(c);CHECK
    • Try
      • Q(C);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(C),XR(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • P(E);
      • Threat
        • R1(F),XR(c)
      • Vars
        • R(c);OGATE,XR(F)::QAB1(C),XR(c)
        • R(c);N_GUARD::QAB1(C),XR(c)
        • B(a);N_GUARD::QAR1(C),XB(a)
        • R(c);N_GUARD,P_PINS(B)::QAB1(C)
        • R(c);N_GUARD::QAB1(C)
        • R(c);S_CUTB(a)::QAR1(C)
        • B(a);N_GUARD::QAR1(C)
      • Refutation
        • R(c);XP(G)
  • Actual
    • Q(C);
    • Threat
      • R1(F),XR(c)
    • Vars
      • R(c);OGATE,XR(F)::P(E),XR(c)
      • R(c);XP(G)::QAB(C)
      • B(a);N_GUARD::QAR1(C),XB(a)
      • R(c);N_GUARD::QAB1(C),XR(c)
      • R(c);S_CUTB(a)::QAR1(C)
      • B(a);N_GUARD::QAR1(C)
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